Reference library

Production deployment patterns

Graceful shutdown, prod config, rollouts, readiness probes, and ship-with-confidence checks.

4 matches

Docker healthcheck CMD mock in Python

Runs a subprocess to curl a health endpoint and returns exit code 0 when healthy, 1 when unhealthy, mimicking a Docker HEALTHCHECK command.

docker healthcheck subprocess

Python

import subprocess
import sys


def run_healthcheck() -> int:
    result = subprocess.run(["curl", "-fsS", "http://localhost:8080/health"], capture_output=True, text=True)
    if result.returncode == 0:
        print("healthy")
        return 0
    print("unhealthy", file=sys.stderr)
    return 1


if __name__ == "__ma…

15 0 Open

Production deployment patterns easy

How to Build a Data Helper for Production Deployment in Python

Build a reusable DataHelper class that loads configs, validates required keys, normalizes string values, and logs schema details — a production-ready data processing pattern.

json pathlib data-processing

Python

import json
from pathlib import Path
from typing import Any, Dict

class DataHelper:
    """Common data processing patterns for production deployment."""
    
    def __init__(self, config_path: str | Path):
        self.config_path = Path(config_path)
        self.config = self._load_config()
    
    def _load_confi…

14 0 Open

Production deployment patterns easy

How to Mock a Dockerfile Multi-Stage Build in Python

Simulate a Dockerfile multi-stage build process in Python using dataclasses to validate stage ordering and file availability before you write the real Dockerfile.

dockerfile multi-stage simulation

Python

from dataclasses import dataclass
from pathlib import Path


@dataclass
class BuildStage:
    name: str
    base_image: str
    files: list[str]
    commands: list[str]


def run_build(stage: BuildStage, context_dir: Path):
    print(f"=== Stage: {stage.name} (base: {stage.base_image}) ===")
    for file in stage.file…

14 0 Open

Production deployment patterns easy

How to Mock a SIGTERM Handler in Python

Create a graceful shutdown handler for SIGTERM and SIGINT signals, then test it by simulating a signal delivery without terminating the process.

signals graceful-shutdown sigterm

Python

import signal
import time

class Service:
    def __init__(self):
        self.running = True

    def shutdown(self, signum, frame):
        print(f"Received signal {signum}, shutting down gracefully...")
        self.running = False

    def run(self):
        signal.signal(signal.SIGTERM, self.shutdown)
        sig…

13 0 Open

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